1. E. Jóna, I. Horváth, M. Kubranová and M. Roman, Thermochim. Acta, 180 (1991) 307.
2. A. Quarino, G. Occhiucci, E. Passagno and R. Bassanelli. Spectrochim. Acta, 33A (1977) 199.
3. W. Kemula, J. Lipkowski and D. Sybilska, Roczniki Chem., 48 (1974) 3.
4. F. Paulik and J. Paulik, Thermochim. Acta, 100 (1986) 23.
5. V. A. Logvinenko, Thermal analysis of coordination compounds and clathrates (in Russian), Izd. Nauka, Novosibirsk 1982.